I’m bumping this because I too I’m having this problem and I really want it fix because the history tracker is one of my favorite features of HA.
I’m still having this issue even having upgraded to the latest version of HA.
I’ve got the same problem. not be working for 6 days.
Also experiencing problems with history.
History under More Info for an entity works as intended, but both the 24hr full history and logbook always fails to load. If I delete my database, they work for a day or so. Afterwards they fail again.
ok I fixed this by deleting the database file (home-assistant_v2.db), but I lost all my history.
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